diff --git a/lucene/CHANGES.txt b/lucene/CHANGES.txt
index a727c71e4a89..ecea26406078 100644
--- a/lucene/CHANGES.txt
+++ b/lucene/CHANGES.txt
@@ -19,7 +19,7 @@ Improvements
 
 Optimizations
 ---------------------
-(No changes)
+* GITHUB#14011: Reduce allocation rate in HNSW concurrent merge. (Viliam Durina)
 
 Bug Fixes
 ---------------------